# The Teacher's Assistant: Or, a System of Practical Arithmetic: Wherein the Several Rules of that Useful Science are Illustrated by a Variety of Examples, a Large Proportion of which are in Federal Money. The Whole Designed to Abridge the Labour of Teachers, and to Facilitate the Instruction of Youth

M. Polock, 1852 - 192 СЕКъДЕР

### тИ КщМЕ ОИ ВЯчСТЕР -сЩМТАНГ ЙЯИТИЙчР

дЕМ ЕМТОПъСАЛЕ ЙЯИТИЙщР СТИР СУМчХЕИР ТОПОХЕСъЕР.

### пЕЯИЕВЭЛЕМА

 Simple Addition 10 Simple Multiplication 27 Compound Division 59 Compound Reduction 66 Practice 84 Tare and Tret 95
 Compound Interest 111 Loss and Gain 117 Vulgar Fractions 129 Decimal Fractions 144 The Single Rule of Three 153

### дГЛОЖИКч АПОСПэСЛАТА

сЕКъДА 172 - When the two extremes and number of terms are given, to find the common difference. RULE. Divide the difference of the extremes by the number of terms, less one; the quotient will be the common difference.
сЕКъДА 190 - Feet multiplied by feet, give feet. Feet multiplied by inches, give inches. Feet multiplied by seconds, give seconds. Inches multiplied by inches, give seconds. Inches multiplied by seconds, give thirds. Seconds multiplied by seconds, give fourths.
сЕКъДА 136 - To reduce any given quantity to the fraction of any greater denomination of the same kind. RULE. Reduce the given quantity to the lowest term mentioned for a numerator; then reduce the integral part to the same term, for.
сЕКъДА 74 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
сЕКъДА 157 - Subtract the square number from the left hand period, and to the remainder bring down the next period for a dividend.
сЕКъДА 131 - Operations with Fractions A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
сЕКъДА 31 - Scale: 4 farthings (far.) = 1 penny (d.); 12 pence = 1 shilling (s.) ; 20 shillings — 1 pound (ё). 156.
сЕКъДА 157 - RULE. 1. Separate the given number into periods of two figures, each, beginning at the units place.
сЕКъДА 129 - The number above the line is called the numerator, and that below the line the denominator. The denominator...
сЕКъДА 17 - DIVISION we find how many times one number is contained in another. The number to be divided, is called the DIVIDEND ; the number by which to divide is called the DIVISOR; the number of times the dividend contains the divisor is called the QUOTIENT.